Stability: pretty good. I usually have at least 2 browser windows open, sometimes more (usually reader.google.com & this site), and sometimes another app like xterm, or application manager, and I have had not one crash all week. I use it all day long every weekday and 3 nights a week for taking notes in class. Seems much more stable than 770 for my use. Mplayer does crash on a 250 MB avi, but other than that it has been smooth sailing. BT and wifi also are more stable.